Commit | Line | Data |
---|---|---|
e27e3dac DT |
1 | |
2 | /* | |
3 | * edac_device.c | |
4 | * (C) 2007 www.douglaskthompson.com | |
5 | * | |
6 | * This file may be distributed under the terms of the | |
7 | * GNU General Public License. | |
8 | * | |
9 | * Written by Doug Thompson <norsk5@xmission.com> | |
10 | * | |
11 | * edac_device API implementation | |
12 | * 19 Jan 2007 | |
13 | */ | |
14 | ||
6d8ef247 | 15 | #include <asm/page.h> |
7c0f6ba6 | 16 | #include <linux/uaccess.h> |
6d8ef247 MCC |
17 | #include <linux/ctype.h> |
18 | #include <linux/highmem.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/jiffies.h> | |
e27e3dac | 21 | #include <linux/module.h> |
6d8ef247 | 22 | #include <linux/slab.h> |
e27e3dac | 23 | #include <linux/smp.h> |
6d8ef247 | 24 | #include <linux/spinlock.h> |
e27e3dac | 25 | #include <linux/sysctl.h> |
e27e3dac | 26 | #include <linux/timer.h> |
e27e3dac | 27 | |
6d8ef247 | 28 | #include "edac_device.h" |
e27e3dac DT |
29 | #include "edac_module.h" |
30 | ||
bf52fa4a DT |
31 | /* lock for the list: 'edac_device_list', manipulation of this list |
32 | * is protected by the 'device_ctls_mutex' lock | |
33 | */ | |
0ca84761 | 34 | static DEFINE_MUTEX(device_ctls_mutex); |
ff6ac2a6 | 35 | static LIST_HEAD(edac_device_list); |
e27e3dac | 36 | |
cec669ff MS |
37 | /* Default workqueue processing interval on this instance, in msecs */ |
38 | #define DEFAULT_POLL_INTERVAL 1000 | |
39 | ||
e27e3dac DT |
40 | #ifdef CONFIG_EDAC_DEBUG |
41 | static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev) | |
42 | { | |
956b9ba1 JP |
43 | edac_dbg(3, "\tedac_dev = %p dev_idx=%d\n", |
44 | edac_dev, edac_dev->dev_idx); | |
45 | edac_dbg(4, "\tedac_dev->edac_check = %p\n", edac_dev->edac_check); | |
46 | edac_dbg(3, "\tdev = %p\n", edac_dev->dev); | |
47 | edac_dbg(3, "\tmod_name:ctl_name = %s:%s\n", | |
48 | edac_dev->mod_name, edac_dev->ctl_name); | |
49 | edac_dbg(3, "\tpvt_info = %p\n\n", edac_dev->pvt_info); | |
e27e3dac | 50 | } |
079708b9 | 51 | #endif /* CONFIG_EDAC_DEBUG */ |
e27e3dac | 52 | |
0d24a49e BP |
53 | /* |
54 | * @off_val: zero, 1, or other based offset | |
55 | */ | |
56 | struct edac_device_ctl_info * | |
57 | edac_device_alloc_ctl_info(unsigned pvt_sz, char *dev_name, unsigned nr_instances, | |
58 | char *blk_name, unsigned nr_blocks, unsigned off_val, | |
59 | struct edac_dev_sysfs_block_attribute *attrib_spec, | |
60 | unsigned nr_attrib, int device_index) | |
e27e3dac | 61 | { |
fd309a9d | 62 | struct edac_dev_sysfs_block_attribute *dev_attrib, *attrib_p, *attrib; |
0d24a49e BP |
63 | struct edac_device_block *dev_blk, *blk_p, *blk; |
64 | struct edac_device_instance *dev_inst, *inst; | |
65 | struct edac_device_ctl_info *dev_ctl; | |
e27e3dac | 66 | unsigned instance, block, attr; |
9fb9ce39 | 67 | void *pvt; |
1c3631ff | 68 | int err; |
e27e3dac | 69 | |
956b9ba1 | 70 | edac_dbg(4, "instances=%d blocks=%d\n", nr_instances, nr_blocks); |
e27e3dac | 71 | |
9fb9ce39 BP |
72 | dev_ctl = kzalloc(sizeof(struct edac_device_ctl_info), GFP_KERNEL); |
73 | if (!dev_ctl) | |
74 | return NULL; | |
e27e3dac | 75 | |
13088b65 | 76 | dev_inst = kcalloc(nr_instances, sizeof(struct edac_device_instance), GFP_KERNEL); |
9fb9ce39 BP |
77 | if (!dev_inst) |
78 | goto free; | |
e27e3dac | 79 | |
9fb9ce39 | 80 | dev_ctl->instances = dev_inst; |
e27e3dac | 81 | |
13088b65 | 82 | dev_blk = kcalloc(nr_instances * nr_blocks, sizeof(struct edac_device_block), GFP_KERNEL); |
9fb9ce39 BP |
83 | if (!dev_blk) |
84 | goto free; | |
e27e3dac | 85 | |
9fb9ce39 | 86 | dev_ctl->blocks = dev_blk; |
fd309a9d | 87 | |
9fb9ce39 | 88 | if (nr_attrib) { |
13088b65 BP |
89 | dev_attrib = kcalloc(nr_attrib, sizeof(struct edac_dev_sysfs_block_attribute), |
90 | GFP_KERNEL); | |
9fb9ce39 BP |
91 | if (!dev_attrib) |
92 | goto free; | |
e27e3dac | 93 | |
9fb9ce39 BP |
94 | dev_ctl->attribs = dev_attrib; |
95 | } | |
e27e3dac | 96 | |
0d24a49e BP |
97 | if (pvt_sz) { |
98 | pvt = kzalloc(pvt_sz, GFP_KERNEL); | |
9fb9ce39 BP |
99 | if (!pvt) |
100 | goto free; | |
101 | ||
102 | dev_ctl->pvt_info = pvt; | |
103 | } | |
104 | ||
105 | dev_ctl->dev_idx = device_index; | |
106 | dev_ctl->nr_instances = nr_instances; | |
e27e3dac | 107 | |
56e61a9c DT |
108 | /* Default logging of CEs and UEs */ |
109 | dev_ctl->log_ce = 1; | |
110 | dev_ctl->log_ue = 1; | |
111 | ||
52490c8d | 112 | /* Name of this edac device */ |
0d24a49e | 113 | snprintf(dev_ctl->name, sizeof(dev_ctl->name),"%s", dev_name); |
b2a4ac0c | 114 | |
e27e3dac DT |
115 | /* Initialize every Instance */ |
116 | for (instance = 0; instance < nr_instances; instance++) { | |
117 | inst = &dev_inst[instance]; | |
118 | inst->ctl = dev_ctl; | |
119 | inst->nr_blocks = nr_blocks; | |
120 | blk_p = &dev_blk[instance * nr_blocks]; | |
121 | inst->blocks = blk_p; | |
122 | ||
123 | /* name of this instance */ | |
0d24a49e | 124 | snprintf(inst->name, sizeof(inst->name), "%s%u", dev_name, instance); |
e27e3dac DT |
125 | |
126 | /* Initialize every block in each instance */ | |
079708b9 | 127 | for (block = 0; block < nr_blocks; block++) { |
e27e3dac DT |
128 | blk = &blk_p[block]; |
129 | blk->instance = inst; | |
e27e3dac | 130 | snprintf(blk->name, sizeof(blk->name), |
0d24a49e | 131 | "%s%d", blk_name, block + off_val); |
e27e3dac | 132 | |
956b9ba1 JP |
133 | edac_dbg(4, "instance=%d inst_p=%p block=#%d block_p=%p name='%s'\n", |
134 | instance, inst, block, blk, blk->name); | |
e27e3dac | 135 | |
fd309a9d DT |
136 | /* if there are NO attributes OR no attribute pointer |
137 | * then continue on to next block iteration | |
138 | */ | |
139 | if ((nr_attrib == 0) || (attrib_spec == NULL)) | |
140 | continue; | |
141 | ||
142 | /* setup the attribute array for this block */ | |
143 | blk->nr_attribs = nr_attrib; | |
144 | attrib_p = &dev_attrib[block*nr_instances*nr_attrib]; | |
145 | blk->block_attributes = attrib_p; | |
146 | ||
956b9ba1 JP |
147 | edac_dbg(4, "THIS BLOCK_ATTRIB=%p\n", |
148 | blk->block_attributes); | |
b2a4ac0c | 149 | |
fd309a9d DT |
150 | /* Initialize every user specified attribute in this |
151 | * block with the data the caller passed in | |
b2a4ac0c DT |
152 | * Each block gets its own copy of pointers, |
153 | * and its unique 'value' | |
fd309a9d DT |
154 | */ |
155 | for (attr = 0; attr < nr_attrib; attr++) { | |
156 | attrib = &attrib_p[attr]; | |
fd309a9d | 157 | |
b2a4ac0c DT |
158 | /* populate the unique per attrib |
159 | * with the code pointers and info | |
160 | */ | |
161 | attrib->attr = attrib_spec[attr].attr; | |
162 | attrib->show = attrib_spec[attr].show; | |
163 | attrib->store = attrib_spec[attr].store; | |
164 | ||
165 | attrib->block = blk; /* up link */ | |
166 | ||
956b9ba1 JP |
167 | edac_dbg(4, "alloc-attrib=%p attrib_name='%s' attrib-spec=%p spec-name=%s\n", |
168 | attrib, attrib->attr.name, | |
169 | &attrib_spec[attr], | |
170 | attrib_spec[attr].attr.name | |
b2a4ac0c | 171 | ); |
e27e3dac DT |
172 | } |
173 | } | |
174 | } | |
175 | ||
176 | /* Mark this instance as merely ALLOCATED */ | |
177 | dev_ctl->op_state = OP_ALLOC; | |
178 | ||
1c3631ff DT |
179 | /* |
180 | * Initialize the 'root' kobj for the edac_device controller | |
181 | */ | |
182 | err = edac_device_register_sysfs_main_kobj(dev_ctl); | |
9fb9ce39 BP |
183 | if (err) |
184 | goto free; | |
1c3631ff DT |
185 | |
186 | /* at this point, the root kobj is valid, and in order to | |
187 | * 'free' the object, then the function: | |
188 | * edac_device_unregister_sysfs_main_kobj() must be called | |
189 | * which will perform kobj unregistration and the actual free | |
190 | * will occur during the kobject callback operation | |
191 | */ | |
192 | ||
e27e3dac | 193 | return dev_ctl; |
9fb9ce39 BP |
194 | |
195 | free: | |
196 | __edac_device_free_ctl_info(dev_ctl); | |
197 | ||
198 | return NULL; | |
e27e3dac DT |
199 | } |
200 | EXPORT_SYMBOL_GPL(edac_device_alloc_ctl_info); | |
201 | ||
079708b9 DT |
202 | void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info) |
203 | { | |
1c3631ff | 204 | edac_device_unregister_sysfs_main_kobj(ctl_info); |
e27e3dac | 205 | } |
079708b9 | 206 | EXPORT_SYMBOL_GPL(edac_device_free_ctl_info); |
e27e3dac DT |
207 | |
208 | /* | |
209 | * find_edac_device_by_dev | |
210 | * scans the edac_device list for a specific 'struct device *' | |
52490c8d DT |
211 | * |
212 | * lock to be held prior to call: device_ctls_mutex | |
213 | * | |
214 | * Return: | |
215 | * pointer to control structure managing 'dev' | |
216 | * NULL if not found on list | |
e27e3dac | 217 | */ |
079708b9 | 218 | static struct edac_device_ctl_info *find_edac_device_by_dev(struct device *dev) |
e27e3dac DT |
219 | { |
220 | struct edac_device_ctl_info *edac_dev; | |
221 | struct list_head *item; | |
222 | ||
956b9ba1 | 223 | edac_dbg(0, "\n"); |
e27e3dac DT |
224 | |
225 | list_for_each(item, &edac_device_list) { | |
226 | edac_dev = list_entry(item, struct edac_device_ctl_info, link); | |
227 | ||
228 | if (edac_dev->dev == dev) | |
229 | return edac_dev; | |
230 | } | |
231 | ||
232 | return NULL; | |
233 | } | |
234 | ||
235 | /* | |
236 | * add_edac_dev_to_global_list | |
237 | * Before calling this function, caller must | |
238 | * assign a unique value to edac_dev->dev_idx. | |
52490c8d DT |
239 | * |
240 | * lock to be held prior to call: device_ctls_mutex | |
241 | * | |
e27e3dac DT |
242 | * Return: |
243 | * 0 on success | |
244 | * 1 on failure. | |
245 | */ | |
079708b9 | 246 | static int add_edac_dev_to_global_list(struct edac_device_ctl_info *edac_dev) |
e27e3dac DT |
247 | { |
248 | struct list_head *item, *insert_before; | |
249 | struct edac_device_ctl_info *rover; | |
250 | ||
251 | insert_before = &edac_device_list; | |
252 | ||
253 | /* Determine if already on the list */ | |
52490c8d DT |
254 | rover = find_edac_device_by_dev(edac_dev->dev); |
255 | if (unlikely(rover != NULL)) | |
e27e3dac DT |
256 | goto fail0; |
257 | ||
258 | /* Insert in ascending order by 'dev_idx', so find position */ | |
259 | list_for_each(item, &edac_device_list) { | |
260 | rover = list_entry(item, struct edac_device_ctl_info, link); | |
261 | ||
262 | if (rover->dev_idx >= edac_dev->dev_idx) { | |
263 | if (unlikely(rover->dev_idx == edac_dev->dev_idx)) | |
264 | goto fail1; | |
265 | ||
266 | insert_before = item; | |
267 | break; | |
268 | } | |
269 | } | |
270 | ||
271 | list_add_tail_rcu(&edac_dev->link, insert_before); | |
272 | return 0; | |
273 | ||
052dfb45 | 274 | fail0: |
e27e3dac | 275 | edac_printk(KERN_WARNING, EDAC_MC, |
052dfb45 | 276 | "%s (%s) %s %s already assigned %d\n", |
281efb17 | 277 | dev_name(rover->dev), edac_dev_name(rover), |
052dfb45 | 278 | rover->mod_name, rover->ctl_name, rover->dev_idx); |
e27e3dac DT |
279 | return 1; |
280 | ||
052dfb45 | 281 | fail1: |
e27e3dac | 282 | edac_printk(KERN_WARNING, EDAC_MC, |
052dfb45 DT |
283 | "bug in low-level driver: attempt to assign\n" |
284 | " duplicate dev_idx %d in %s()\n", rover->dev_idx, | |
285 | __func__); | |
e27e3dac DT |
286 | return 1; |
287 | } | |
288 | ||
e27e3dac DT |
289 | /* |
290 | * del_edac_device_from_global_list | |
291 | */ | |
079708b9 | 292 | static void del_edac_device_from_global_list(struct edac_device_ctl_info |
052dfb45 | 293 | *edac_device) |
e27e3dac DT |
294 | { |
295 | list_del_rcu(&edac_device->link); | |
e2e77098 LJ |
296 | |
297 | /* these are for safe removal of devices from global list while | |
298 | * NMI handlers may be traversing list | |
299 | */ | |
300 | synchronize_rcu(); | |
301 | INIT_LIST_HEAD(&edac_device->link); | |
e27e3dac DT |
302 | } |
303 | ||
e27e3dac | 304 | /* |
81d87cb1 | 305 | * edac_device_workq_function |
e27e3dac | 306 | * performs the operation scheduled by a workq request |
bf52fa4a DT |
307 | * |
308 | * this workq is embedded within an edac_device_ctl_info | |
309 | * structure, that needs to be polled for possible error events. | |
310 | * | |
311 | * This operation is to acquire the list mutex lock | |
f70d4a95 | 312 | * (thus preventing insertation or deletion) |
bf52fa4a DT |
313 | * and then call the device's poll function IFF this device is |
314 | * running polled and there is a poll function defined. | |
e27e3dac | 315 | */ |
81d87cb1 | 316 | static void edac_device_workq_function(struct work_struct *work_req) |
e27e3dac | 317 | { |
fbeb4384 | 318 | struct delayed_work *d_work = to_delayed_work(work_req); |
079708b9 | 319 | struct edac_device_ctl_info *edac_dev = to_edac_device_ctl_work(d_work); |
e27e3dac | 320 | |
0ca84761 | 321 | mutex_lock(&device_ctls_mutex); |
e27e3dac | 322 | |
d519c8d9 HC |
323 | /* If we are being removed, bail out immediately */ |
324 | if (edac_dev->op_state == OP_OFFLINE) { | |
325 | mutex_unlock(&device_ctls_mutex); | |
326 | return; | |
327 | } | |
328 | ||
e27e3dac DT |
329 | /* Only poll controllers that are running polled and have a check */ |
330 | if ((edac_dev->op_state == OP_RUNNING_POLL) && | |
052dfb45 DT |
331 | (edac_dev->edac_check != NULL)) { |
332 | edac_dev->edac_check(edac_dev); | |
e27e3dac DT |
333 | } |
334 | ||
0ca84761 | 335 | mutex_unlock(&device_ctls_mutex); |
e27e3dac | 336 | |
bf52fa4a DT |
337 | /* Reschedule the workq for the next time period to start again |
338 | * if the number of msec is for 1 sec, then adjust to the next | |
15ed103a | 339 | * whole one second to save timers firing all over the period |
bf52fa4a DT |
340 | * between integral seconds |
341 | */ | |
cec669ff | 342 | if (edac_dev->poll_msec == DEFAULT_POLL_INTERVAL) |
c4cf3b45 | 343 | edac_queue_work(&edac_dev->work, round_jiffies_relative(edac_dev->delay)); |
bf52fa4a | 344 | else |
c4cf3b45 | 345 | edac_queue_work(&edac_dev->work, edac_dev->delay); |
e27e3dac DT |
346 | } |
347 | ||
348 | /* | |
81d87cb1 | 349 | * edac_device_workq_setup |
e27e3dac DT |
350 | * initialize a workq item for this edac_device instance |
351 | * passing in the new delay period in msec | |
352 | */ | |
e136fa01 BP |
353 | static void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev, |
354 | unsigned msec) | |
e27e3dac | 355 | { |
956b9ba1 | 356 | edac_dbg(0, "\n"); |
e27e3dac | 357 | |
bf52fa4a DT |
358 | /* take the arg 'msec' and set it into the control structure |
359 | * to used in the time period calculation | |
360 | * then calc the number of jiffies that represents | |
361 | */ | |
e27e3dac | 362 | edac_dev->poll_msec = msec; |
bf52fa4a | 363 | edac_dev->delay = msecs_to_jiffies(msec); |
e27e3dac | 364 | |
81d87cb1 | 365 | INIT_DELAYED_WORK(&edac_dev->work, edac_device_workq_function); |
bf52fa4a DT |
366 | |
367 | /* optimize here for the 1 second case, which will be normal value, to | |
368 | * fire ON the 1 second time event. This helps reduce all sorts of | |
369 | * timers firing on sub-second basis, while they are happy | |
370 | * to fire together on the 1 second exactly | |
371 | */ | |
cec669ff | 372 | if (edac_dev->poll_msec == DEFAULT_POLL_INTERVAL) |
c4cf3b45 | 373 | edac_queue_work(&edac_dev->work, round_jiffies_relative(edac_dev->delay)); |
bf52fa4a | 374 | else |
c4cf3b45 | 375 | edac_queue_work(&edac_dev->work, edac_dev->delay); |
e27e3dac DT |
376 | } |
377 | ||
378 | /* | |
81d87cb1 | 379 | * edac_device_workq_teardown |
e27e3dac DT |
380 | * stop the workq processing on this edac_dev |
381 | */ | |
e136fa01 | 382 | static void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev) |
e27e3dac | 383 | { |
881f0fce SB |
384 | if (!edac_dev->edac_check) |
385 | return; | |
386 | ||
fcd5c4dd BP |
387 | edac_dev->op_state = OP_OFFLINE; |
388 | ||
c4cf3b45 | 389 | edac_stop_work(&edac_dev->work); |
e27e3dac DT |
390 | } |
391 | ||
392 | /* | |
393 | * edac_device_reset_delay_period | |
bf52fa4a DT |
394 | * |
395 | * need to stop any outstanding workq queued up at this time | |
396 | * because we will be resetting the sleep time. | |
397 | * Then restart the workq on the new delay | |
e27e3dac | 398 | */ |
079708b9 | 399 | void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev, |
e8407743 | 400 | unsigned long msec) |
e27e3dac | 401 | { |
e8407743 EF |
402 | edac_dev->poll_msec = msec; |
403 | edac_dev->delay = msecs_to_jiffies(msec); | |
e27e3dac | 404 | |
e8407743 | 405 | /* See comment in edac_device_workq_setup() above */ |
cec669ff | 406 | if (edac_dev->poll_msec == DEFAULT_POLL_INTERVAL) |
e8407743 EF |
407 | edac_mod_work(&edac_dev->work, round_jiffies_relative(edac_dev->delay)); |
408 | else | |
409 | edac_mod_work(&edac_dev->work, edac_dev->delay); | |
e27e3dac DT |
410 | } |
411 | ||
1dc9b70d HC |
412 | int edac_device_alloc_index(void) |
413 | { | |
414 | static atomic_t device_indexes = ATOMIC_INIT(0); | |
415 | ||
416 | return atomic_inc_return(&device_indexes) - 1; | |
417 | } | |
418 | EXPORT_SYMBOL_GPL(edac_device_alloc_index); | |
419 | ||
d45e7823 | 420 | int edac_device_add_device(struct edac_device_ctl_info *edac_dev) |
e27e3dac | 421 | { |
956b9ba1 | 422 | edac_dbg(0, "\n"); |
e27e3dac | 423 | |
e27e3dac DT |
424 | #ifdef CONFIG_EDAC_DEBUG |
425 | if (edac_debug_level >= 3) | |
426 | edac_device_dump_device(edac_dev); | |
427 | #endif | |
0ca84761 | 428 | mutex_lock(&device_ctls_mutex); |
e27e3dac DT |
429 | |
430 | if (add_edac_dev_to_global_list(edac_dev)) | |
431 | goto fail0; | |
432 | ||
433 | /* set load time so that error rate can be tracked */ | |
434 | edac_dev->start_time = jiffies; | |
435 | ||
436 | /* create this instance's sysfs entries */ | |
437 | if (edac_device_create_sysfs(edac_dev)) { | |
438 | edac_device_printk(edac_dev, KERN_WARNING, | |
052dfb45 | 439 | "failed to create sysfs device\n"); |
e27e3dac DT |
440 | goto fail1; |
441 | } | |
442 | ||
443 | /* If there IS a check routine, then we are running POLLED */ | |
444 | if (edac_dev->edac_check != NULL) { | |
445 | /* This instance is NOW RUNNING */ | |
446 | edac_dev->op_state = OP_RUNNING_POLL; | |
447 | ||
cec669ff | 448 | edac_device_workq_setup(edac_dev, edac_dev->poll_msec ?: DEFAULT_POLL_INTERVAL); |
e27e3dac DT |
449 | } else { |
450 | edac_dev->op_state = OP_RUNNING_INTERRUPT; | |
451 | } | |
452 | ||
e27e3dac DT |
453 | /* Report action taken */ |
454 | edac_device_printk(edac_dev, KERN_INFO, | |
7270a608 RR |
455 | "Giving out device to module %s controller %s: DEV %s (%s)\n", |
456 | edac_dev->mod_name, edac_dev->ctl_name, edac_dev->dev_name, | |
457 | edac_op_state_to_string(edac_dev->op_state)); | |
e27e3dac | 458 | |
0ca84761 | 459 | mutex_unlock(&device_ctls_mutex); |
e27e3dac DT |
460 | return 0; |
461 | ||
052dfb45 | 462 | fail1: |
e27e3dac DT |
463 | /* Some error, so remove the entry from the lsit */ |
464 | del_edac_device_from_global_list(edac_dev); | |
465 | ||
052dfb45 | 466 | fail0: |
0ca84761 | 467 | mutex_unlock(&device_ctls_mutex); |
e27e3dac DT |
468 | return 1; |
469 | } | |
470 | EXPORT_SYMBOL_GPL(edac_device_add_device); | |
471 | ||
079708b9 | 472 | struct edac_device_ctl_info *edac_device_del_device(struct device *dev) |
e27e3dac DT |
473 | { |
474 | struct edac_device_ctl_info *edac_dev; | |
475 | ||
956b9ba1 | 476 | edac_dbg(0, "\n"); |
e27e3dac | 477 | |
0ca84761 | 478 | mutex_lock(&device_ctls_mutex); |
e27e3dac | 479 | |
52490c8d DT |
480 | /* Find the structure on the list, if not there, then leave */ |
481 | edac_dev = find_edac_device_by_dev(dev); | |
482 | if (edac_dev == NULL) { | |
0ca84761 | 483 | mutex_unlock(&device_ctls_mutex); |
e27e3dac DT |
484 | return NULL; |
485 | } | |
486 | ||
487 | /* mark this instance as OFFLINE */ | |
488 | edac_dev->op_state = OP_OFFLINE; | |
489 | ||
e27e3dac DT |
490 | /* deregister from global list */ |
491 | del_edac_device_from_global_list(edac_dev); | |
492 | ||
0ca84761 | 493 | mutex_unlock(&device_ctls_mutex); |
e27e3dac | 494 | |
d519c8d9 HC |
495 | /* clear workq processing on this instance */ |
496 | edac_device_workq_teardown(edac_dev); | |
497 | ||
1c3631ff DT |
498 | /* Tear down the sysfs entries for this instance */ |
499 | edac_device_remove_sysfs(edac_dev); | |
500 | ||
e27e3dac | 501 | edac_printk(KERN_INFO, EDAC_MC, |
052dfb45 DT |
502 | "Removed device %d for %s %s: DEV %s\n", |
503 | edac_dev->dev_idx, | |
17aa7e03 | 504 | edac_dev->mod_name, edac_dev->ctl_name, edac_dev_name(edac_dev)); |
e27e3dac DT |
505 | |
506 | return edac_dev; | |
507 | } | |
079708b9 | 508 | EXPORT_SYMBOL_GPL(edac_device_del_device); |
e27e3dac DT |
509 | |
510 | static inline int edac_device_get_log_ce(struct edac_device_ctl_info *edac_dev) | |
511 | { | |
512 | return edac_dev->log_ce; | |
513 | } | |
514 | ||
515 | static inline int edac_device_get_log_ue(struct edac_device_ctl_info *edac_dev) | |
516 | { | |
517 | return edac_dev->log_ue; | |
518 | } | |
519 | ||
079708b9 | 520 | static inline int edac_device_get_panic_on_ue(struct edac_device_ctl_info |
052dfb45 | 521 | *edac_dev) |
e27e3dac DT |
522 | { |
523 | return edac_dev->panic_on_ue; | |
524 | } | |
525 | ||
9816b4af HH |
526 | void edac_device_handle_ce_count(struct edac_device_ctl_info *edac_dev, |
527 | unsigned int count, int inst_nr, int block_nr, | |
528 | const char *msg) | |
e27e3dac DT |
529 | { |
530 | struct edac_device_instance *instance; | |
531 | struct edac_device_block *block = NULL; | |
532 | ||
9816b4af HH |
533 | if (!count) |
534 | return; | |
535 | ||
e27e3dac DT |
536 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { |
537 | edac_device_printk(edac_dev, KERN_ERR, | |
052dfb45 DT |
538 | "INTERNAL ERROR: 'instance' out of range " |
539 | "(%d >= %d)\n", inst_nr, | |
540 | edac_dev->nr_instances); | |
e27e3dac DT |
541 | return; |
542 | } | |
543 | ||
544 | instance = edac_dev->instances + inst_nr; | |
545 | ||
546 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { | |
547 | edac_device_printk(edac_dev, KERN_ERR, | |
052dfb45 DT |
548 | "INTERNAL ERROR: instance %d 'block' " |
549 | "out of range (%d >= %d)\n", | |
550 | inst_nr, block_nr, | |
551 | instance->nr_blocks); | |
e27e3dac DT |
552 | return; |
553 | } | |
554 | ||
555 | if (instance->nr_blocks > 0) { | |
556 | block = instance->blocks + block_nr; | |
9816b4af | 557 | block->counters.ce_count += count; |
e27e3dac DT |
558 | } |
559 | ||
25985edc | 560 | /* Propagate the count up the 'totals' tree */ |
9816b4af HH |
561 | instance->counters.ce_count += count; |
562 | edac_dev->counters.ce_count += count; | |
e27e3dac DT |
563 | |
564 | if (edac_device_get_log_ce(edac_dev)) | |
565 | edac_device_printk(edac_dev, KERN_WARNING, | |
9816b4af HH |
566 | "CE: %s instance: %s block: %s count: %d '%s'\n", |
567 | edac_dev->ctl_name, instance->name, | |
568 | block ? block->name : "N/A", count, msg); | |
e27e3dac | 569 | } |
9816b4af | 570 | EXPORT_SYMBOL_GPL(edac_device_handle_ce_count); |
e27e3dac | 571 | |
9816b4af HH |
572 | void edac_device_handle_ue_count(struct edac_device_ctl_info *edac_dev, |
573 | unsigned int count, int inst_nr, int block_nr, | |
574 | const char *msg) | |
e27e3dac DT |
575 | { |
576 | struct edac_device_instance *instance; | |
577 | struct edac_device_block *block = NULL; | |
578 | ||
9816b4af HH |
579 | if (!count) |
580 | return; | |
581 | ||
e27e3dac DT |
582 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { |
583 | edac_device_printk(edac_dev, KERN_ERR, | |
052dfb45 DT |
584 | "INTERNAL ERROR: 'instance' out of range " |
585 | "(%d >= %d)\n", inst_nr, | |
586 | edac_dev->nr_instances); | |
e27e3dac DT |
587 | return; |
588 | } | |
589 | ||
590 | instance = edac_dev->instances + inst_nr; | |
591 | ||
592 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { | |
593 | edac_device_printk(edac_dev, KERN_ERR, | |
052dfb45 DT |
594 | "INTERNAL ERROR: instance %d 'block' " |
595 | "out of range (%d >= %d)\n", | |
596 | inst_nr, block_nr, | |
597 | instance->nr_blocks); | |
e27e3dac DT |
598 | return; |
599 | } | |
600 | ||
601 | if (instance->nr_blocks > 0) { | |
602 | block = instance->blocks + block_nr; | |
9816b4af | 603 | block->counters.ue_count += count; |
e27e3dac DT |
604 | } |
605 | ||
25985edc | 606 | /* Propagate the count up the 'totals' tree */ |
9816b4af HH |
607 | instance->counters.ue_count += count; |
608 | edac_dev->counters.ue_count += count; | |
e27e3dac DT |
609 | |
610 | if (edac_device_get_log_ue(edac_dev)) | |
611 | edac_device_printk(edac_dev, KERN_EMERG, | |
9816b4af HH |
612 | "UE: %s instance: %s block: %s count: %d '%s'\n", |
613 | edac_dev->ctl_name, instance->name, | |
614 | block ? block->name : "N/A", count, msg); | |
e27e3dac DT |
615 | |
616 | if (edac_device_get_panic_on_ue(edac_dev)) | |
9816b4af HH |
617 | panic("EDAC %s: UE instance: %s block %s count: %d '%s'\n", |
618 | edac_dev->ctl_name, instance->name, | |
619 | block ? block->name : "N/A", count, msg); | |
e27e3dac | 620 | } |
9816b4af | 621 | EXPORT_SYMBOL_GPL(edac_device_handle_ue_count); |